<?php
// This file is part of BOINC.
// http://boinc.berkeley.edu
// Copyright (C) 2008 University of California
//
// BOINC is free software; you can redistribute it and/or modify it
// under the terms of the GNU Lesser General Public License
// as published by the Free Software Foundation,
// either version 3 of the License, or (at your option) any later version.
//
// BOINC is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
// See the GNU Lesser General Public License for more details.
//
// You should have received a copy of the GNU Lesser General Public License
// along with BOINC. If not, see <http://www.gnu.org/licenses/>. 
//
// This file was modified by contributors of "BOINC Web Tweak" project.

class BoltRandom extends BoltSet {
	public $units;
	function __construct($name, $units, $number, $attrs) {
		parent::__construct($name, $units, $number, $attrs);
	}

	function order(&$iter) {
		$state_rec = $iter->state[$this->name];
		if ($state_rec) {
			if (array_key_exists('seed', $state_rec)) {
				$seed = $state_rec['seed'];
			} else {
				$seed = ((double)microtime()*1000000);
				$state_rec['seed'] = $seed;
				$iter->state[$this->name] = $state_rec;
			}
		} else {
			$state_rec = $this->init();
			$seed = ((double)microtime()*1000000);
			$state_rec['seed'] = $seed;
			$iter->state[$this->name] = $state_rec;
		}
		srand($seed);
		shuffle($this->units);
		$this->ordered = true;
	}
}

function random() {
	$args = func_get_args();
	$units = array();
	$name = "";
	$number = 0;
	$attrs = null;
	foreach ($args as $arg) {
		if (is_array($arg)) {
			switch ($arg[0]) {
			case 'name': $name = $arg[1]; break;
			case 'title': $title = $arg[1]; break;
			case 'number': $number = $arg[1]; break;
			case 'attrs': $attrs = $arg[1]; break;
			default: echo "Unrecognized array arg: ", $arg[0], "\n"; break;
			}
		} else if (is_object($arg)) {
			if (is_subclass_of($arg, "BoltUnit")) {
				$units[] = $arg;
			} else {
				echo "Unrecognized arg: ";
				print_r($arg);
			}
		}
	}
	if ($number == 0) $number = count($units);
	return new BoltRandom($name, $units, $number, $attrs);
}

?>
